1. If an economy has a budget surplus of 400, private savings of 1,200, and investment of 1,600, what will the balance of trade in this economy equal?

2. If there is shortage of loanable funds, then what happens to the supply and demand for loanable funds?

3.Changing the level of government spending is an example of what kind of policy?

4.If inflation is expected, then the short-run aggregate supply curve is shaped how?